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发明名称
摘要
申请公布号
JPS4924790(B1)
申请公布日期
1974.06.25
申请号
JP19700120390
申请日期
1970.12.28
申请人
发明人
分类号
B21B28/04;B21B3/00
主分类号
B21B28/04
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代理人
主权项
地址
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